Furnace setting and control



July l5, 1930.- G. P. CRYSLER 1,770,463

FURNACE SETTING AND CONTROL Filed Sept. 16. 1927 2 Sheets-Sheet l July15, 1930. G. P. CRYSLER FURNACE SETTING AND CONTROL Lled Sept. 16. 1927I W My 071/772 4 l i I I!!! 3 l Z m fl ail? \l E E I :IE

Patented July 15, 1930 i i Hairs stares earner entice GEORGE P. CRYSLEB,OF CHICAGO, ILLINOIS FURNACE SETTING AND CONTROL Application filedSeptember 16, 1927. Serial No. 219,838.

The invention relates to improvements in These grates are not shownbecause they are furnace settings and ineansfor controlling necessarilyconcomitant parts of all similar the fiow'and volume of air and steamthrough structures. therconduits and openings provided therein. Thelining blocks 88 are easily remov- In myco-pending application forfurnace able, as fully explained in my aforesaid 00- wall linings orfacings, Serial No. 198,378, pending application and each block has afiled June 13, 1927, I have shown and claimed transversely extendingaperture 9 which a novel lining for a furnace wall of acharaccommunicates with a horizontal branch air ter similar to thatherein disclosed. The or supplemental conduit 10. The conduit. 10 I 10present application has more to do with communicates with the horizontaltrunk air means for regulatingthe drafts of air and condult or duct 11made in the wall 12, steam that pass through thevarious chanthrough thevertical conduits 13, provided nels or conduits into the furnace forsupby Channels 14. in the rear surfaces of the porting combustion andfor proportioning back blocks 15, and thru the horizontal per- 15 theair passing through the grates, below the f l ns 161.6 extendingrearwardly in fire, and the said conduits, especially when e blocks 8from the conduits 10. The a forced draft is usedto promote combustion. uConduit 11 has an'opening 17 which o f th bj fg f th i ti i t 1s incommunicat on with the ash pit below provide avery durable furnacelining in conlthe g ates of the furnace.

20 junction with fluid regulating means adjust- The opemng 17 may beclosed by a flap able to produce conditions of operation V ve, or damper18, which swings on anaxis which will effect desirable results with anat- 19 and Which is movable to open wide the tendgnt economy in fuelonsumption opening 17-21I1Cl to close the trunk COIlClLlit 11,

Oth bj ct advantages d b fit ill in rear of the vertical conduits 13, asshown 25 h i ft appear, to. persons skilled in th by broken lines at 20.When the damper is t, f a ide ti f th f ll i in position 20, all of theair from conduit 11 description when taken in conjunction with W111enter the ash P below the g the drawings forming a part hereof, v It isapparent that when the valve 18 is in h i Y posit on shown in full linesin Figure 4, all of a 30 Figure 1 is 3, front. elevation f a furnace the3.11" from trunk conduit 11 Will ascend the setting'for a steam boilerwith my improvetubes or conduits 13 and that none of it will memes hownin onn cti n ther with, enter the ash pit below the grates; The clamp-Figure 2 is a plan section of a fragment er 18 maybe moved tointermediate positions t k o li I}E II f Fig 1, to send any portion ofthe air through either 35 Fi e 3 i b k y ti n of on or both of thedescribed paths. A rod 21 isan side of the interior of the setting,extension of the axis for the valve 18 and ex- Figure 4 is an enlargedvertical section tends into the ash pit, and secured to its outtakensubstantially on line IV-IV of Figer end a crank arm 22 is movable byrod 23 to ure 1. open and to close the valve 18. A casting 24 40 In allthe views the same reference characis secured at the mouthof the trunkconduit ters are used to indicate similar parts. 11. A steam chamber 25surrounds the open In the drawings, 5 is a furnace front with ing 26 inthe casting 24:. r which my invention is shown to be asso- A slidingdoor, or valve 27 is movable ver ciated. 6 6 are the doors to thecombustion tically to open or to close the opening. 26 to r 45 h b r orfiring doors and 77 are the admit a larger or smaller volume'of air intodoors to the ash pit. The fuel supporting the trunk conduit 11'. Thereis a structure, grates, as in all similartypes ofboiler and such asherein described, on each side of the furnace settings, are placedinteriorly, and setting and a similar arrangement may be betweentheupper edge of the ash doors 77 combined entirelywithin the furnaceand in- 50 and the lower edge of the fire doors 6-6. te mediate the S deWalls.

A chain passes over pulleys 31 and is secured at one end to the valve 27and at its other end to a balancing weight 32.

A steam pipe 35 is contained in air conduit 10. At suitable intervalsand opposite the inner ends of the lateral openings 9 it has sprayinnozzles 36 whereby to spray steam and to draw air through the openings 9into the combustion chamber. The steam pipe 36 is suitabl connected tothe boiler 38 and is controlle by the globe valve 37 \Vhen a forceddraft is desired, an electric motor 40 and fan 41 may be placed in theopening 26 to force air into the trunk conduit 11. The relative volumeof air passing into the combustion chamber may be regulated by valve 18and the volume of steam may be regulated by valve 37 and the aggregatevolume of air admitted into the trunk conduit may be controlled by valve27.

This arran ement, when properly used, is efficient and the furnace isentirely smokeless. when steam is expanded, as when issuing from aspraying nozzle, its temperature is somewhat reduced but, in thisenvironment, the temperature of the steam is raised by its impact intocontact with the incandescing blocks 8 as it passes through the orifices9.

I am aware that many changes may be.

made, and numerous details of construction may be varied througha widerange without departing from the principles of this invention, and Itherefore do not purpose limiting the patent granted hereon, otherwisethan necessitated by the prior art.

Iclaim:

, 1. furnace comprising masonry walls and a. boiler supported thereby,said walls forming a combustion chamber and an ash pit, each of the sidewalls of said furnace having a longitudinally extending trunk ducttherein and a plurality of vertical ducts communieating with said trunkduct throughout its lengt said sidewalls each having supplemental,horizontally disposed, vertically s ced longitudinal ducts, thereinarranged a ve said trunk duct and nearer the inner farm ofsaid walls thewalls constructed to provide a plurality of horizontally disposedpassages between said vertical ducts and said supplemental ducts and aless number of lateral" openings between said supplemental ducts andthecombustion chamber.

2. A furnace comprising masonry walls nd a boiler supported thereby,said walls ormin a combustion chamber and an ash it, eac of-the sidewalls of said furnace having a longitudinally. extending trunk ducttherein an aplurahty of vertical ducts communicating with said trunkduct throughout its length, said side walls each having supplemental,horizontally disposed, vertically acedlongitudinal ducts thereinarranged a ove said trunk duct and nearer the inner faces ofsaid walls,there being aplurality of horizontally disposed passages between saidvertical ducts and said supplemental ducts and a less number of lateralopenings between said supplemental ducts and the combustion chamber, anda valve between the ends of said trunk duct and the first of saidvertical ducts for regulating the volume of air passing to said verticalducts.

3. A furnace comprising masonry walls and a boiler supported thereby,said walls forming a combustion chamber and an ash pit, each of the sidewalls of said furnace having a longitudinally extending trunk ducttherein and a plurality of vertical ducts communicating with said trunkduct throughout its length, said side walls each having supplemental,horizontally disposed, vertically spaced longitudinal duct-s thereinarranged above said trunk duct and nearer the inner faces of said walls,there being a plurality of horizontally disposed passages between saidvertical ducts and said supplemental ducts and a less number of lateralopenings between said supplemental ducts and the combustion chamber,each of said side walls having a horizontal duct between said trunk ductand the ash pit disposed near the entrance to said trunk duct, and avalve arranged to control air passing to said horizontal duct and alsoto said vertical ducts, and a valve at the en trance toeach of saidtrunk ducts.

4. A furnace comprising masonry walls and a boiler supported thereby,said walls forming a combustion chamber and an ash pit, each of the sidewalls of said furnace having a longitudinally extending trunk ducttherein and a plurality of vertical ducts communicating with said trunkduct throughout its length, said side walls each having supplemental,horizontally disposed, vertically spaced longitudinal ducts thereinarranged a ove said trunk duct and nearer the inner faces of said walls,there being a plurality of horizontally disposed passages between saidvertical ducts and saidv supplemental ducts and a less number of lateralopenings between said supplemental ducts and the combustion chamber, anda steam pipe in each of said supplemental ducts havin outlets alignedwith the lateral openings etween said supplemental ducts and thecombustion chamber.

5. A furnace comprising masonry wallsand a boiler su ported thereby,said walls forming a com ustion chamber and an ash pit, eachof the sidewalls of said furnace having a longitudinally extending trunk ducttherein and a plurality of vertical ducts communieating with said trunkduct throughout its length, said side walls each having supplemental,horizontally disposed, vertically spaced longitudinal ducts thereinarranged above said trunk duct and nearer the inner faces of said walls,there being a plurality of horizontally disposed passages between saidvertical ducts and said supplemental ducts and a less number of lateralopenings between said supplemental ducts and the combustion chamber, anda heating chamber about the entrance to each trunk duct.

6. A furnace comprising masonry walls and a boiler-supported thereby,said walls forming a combustion chamber and an ash pit, each of the sidewalls of said furnace having a longitudinally extendingtrunk ducttherein and a plurality of vertical ducts communieating with said trunkduct throughout its length, said side walls each having supplementalhorizontally disposed vertically spaced longitudinal ducts thereinarranged above said trunk duct and near the inner faces of said walls,the walls being constructed to provide a plurality of horizontallydisposed passages between said vertical ducts and said supplementalducts, and a plurality of lateral openings between said supplementalducts and the combustion chamber.

In testimony whereof I have hereunto sub scribed my name at Chicago,Cook County, I

Illinois.

GEORGE P. CRYSLER.

